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Publication of CA44348ApublicationCriticalpatent/CA44348A/fr
Improvements in Apparatus for Raising and Lowering Bodies applicable for instance to Electric and other Lamps, and Railway Carriage and other Blinds, and to Hoisting Gear.
A New or Improved Lifting Dock, or Means for Bodily Raising and Lowering Ships or other Heavy Bodies, and Apparatus or Appliances in connection therewith.